Mule spinning jack spool



July 1.3, 1937. J. K. SCHWARTZ ET AL MULE SPINNING JACK SPOOL Filed Sept. 25, 1936 8 5 Y1 m2 0 C SJ K 0 Patented July 13, 1937 UNITED STATES PATENT OFFICE MULE SPINNING JACK SPOOL York Application September 25, 1936, Serial No. 102,607

10 Claims.

Our invention relates to the art of spinning, and it particularly has reference to jack spools. Its primary object is to provide a spool-having an all metal barrel with replaceable heads of fibre or 5 similar substance, of an improved construction by virtue of which the functional life of the spool is increased and the roving may be cut from the barrel with knives or hooks without injury to the spool, and a lighter weight spool than the wooden l ones is produced.

Other objects will in part be obvious in part be pointed out hereinafter.

To the attainment of the aforesaid objects and ends the invention further resides in those novel 15 features of construction, combination and arrangement of parts which will first be fully described and then will be specifically pointed out in the appended claims, reference being bad to the accompanying drawing, in which:

Figure 1 is a central longitudinal section and part elevation of one end of a jack spool with our invention.

Figure 2 is a section on the line 22 of Figure 1.

Figure 3 is a section on the line 3-3 of Figure 1.

Figure 4 is an end elevation of the end stud.

In the drawing, in which like numbers of reference indicate like parts in all the figures, l represents the metal barrel of the spool. This may be made of sheet steel tubing, either plane or 30 corrugated as shown at 2 in Figure 1. The barrel may be of any desired length, running in practice usually from twenty-seven inches up to seventyfive inches, with a diameter of two and threeeighths inches, more or less.-

Into the ends of the barrel are forced inserted studs each comprising a web 3, an annular flange 5 and a central stud proper 6, the latter being threaded, as at 8, to receive the threaded portion 9 of an end stud composed of the threaded portion 9, the annular shoulder I0, nut I l, and journal l2.

The space 4 between the flange 5 and the stud proper 6 provides a convenient entrance for a spot welding tool by means of which the inserted studs and barrel I are spot welded together as at l. The edge of the flange 5 is knurled at [5, the direction of the teeth, instead of lying radial to the axis of the barrel, are inclined thereto and indent the head l6 so as to keep the head from loosening, by digging into the same and thereby checking any tendency to move in a counter-clockwise direction (that is, the direction that will loosen the head on either end of the 55 spool). In assembling the parts are tightened at and will both ends of the spool by applying a wrench at one end while the other end is held in a vise. The end stud is bored at l3 to lighten the spool.

The head It has a bore l9 and is recessed at I! to receive a lock washer M which has a central opening so as to fit on the shoulder It), the teeth I8 of the washer engaging the nut I I and head Hi. When nut H is screwed home it will lie tightly against. head l6 and head l6 will be tightly pressed against the edge of flange 5 with teeth l5 embedded in the head, while stud proper 9 will have its end flush with the inner face of the stud 3.

Further, the corners of the nut ll lie over the knurled edge l5, giving a good hearing so that hes ds will not be warped in or out.

It is of course to be understood that the structure shown in Figure 1 is duplicated at the other .end (not shown) of the barrel.

From the foregoing description, taken in connection with the accompanying drawing, it is thought that the construction, assembly and operation and uses of the invention will be clear to those skilled'in the art.

What we claim is:

1. In a spool, a metal barrel, an inserted stud in each end of the barrel and permanently secured thereto, said inserted studs each including an annular flange and a stud proper, the latter having a central threaded bore and the former having its edge knurled, an end stud having a nut portion and a threaded portion, the latter entering and cooperating with said central threaded bore. and a fibre head carried by said end stud between the. nut portion thereof and the annular flange of said inserted stud and engaged by said knurled edge.

2. In a spool, a metal barrel, an inserted stud in each end of the barrel and permanently secured thereto, said inserted studs each including an annular flange and a stud proper, the latter having a central threaded bore and the former having its edge knurled, the knurls being inclined to the axis of the stud, an end stud having a nut portion and a threaded portion, the latter entering and cooperating with said central threaded bore, and a fibre head carried by saidend stud between the nut portion thereof and the annular flange of said inserted stud, said fibre head being engaged by said knurled edge.

- 3. In a spool, a metal barrel, an inserted stud in each end of the barrel and permanently secured thereto, said inserted studs each including an annular flange and a stud proper, the latter having a central threaded bore and the former having its edge knurled, an end stud having a nut portion and a threaded portion, the latter entering and cooperating with said central threaded bore, a fibre head carried by said end stud between the nut portion thereof and the annular flange of said inserted stud and engaged by said knurled edge, said head being recessed on its outer face, and a lock washer in said recess to engage the head and said nut portion.

4. In a spool, a metal barrel, an inserted stud in each end of the barrel and permanently secured thereto, said inserted studs each including an annular flange and a stud proper, the latter having a central threaded bore and the former having its edge knurled, the knurls being inclined to the axis of the stud, an end stud having a nut portion and a threaded portion, the latter entering and cooperating with said central threaded bore, a fibre head carried by said end stud between the nut portion thereof and the annular flange of said inserted stud and engaged by said knurled edge, said head being recessed on its outer face, and a lock washer in said recess to engage the head and said nut portion.

5. In a spool, a metal barrel, an inserted stud in each end of the barrel and permanently secured thereto, said inserted studs each including an annular flange and a stud proper, the latter having a central threaded bore and the former having its edge knurled, an end stud having a nut portion and a threaded portion, the latter entering and cooperating with said central threaded bore, and a flbre head carried by said end stud between the nut portion thereof and the annular flange of said inserted stud and engaged by said knurled edge, said nut portion overlying the knurled edge of said inserted stud.

6. In a spool, a metal barrel, an inserted stud in each end of the barrel and permanently secured thereto, said inserted studs each including an annular flange and a stud proper, the latter having a central threaded bore and the former having its edge knurled, the knurls being inclined to the axis of the stud, an end stud having a nut portion and a threaded portion, the latter entering and cooperating with said central threaded bore, and a fibre head carried by said end stud between the nut portion thereof and the annular flange of said inserted stud and engaged by said knurled edge, said nut portion overlying the knurled edge of said inserted stud.

7. In a spool, a metal barrel, an inserted stud in each end of the barrel and permanently secured thereto, said inserted studs each including an annular flange and a stud proper, the latter having a central threaded bore and the former having its edge knurled, an end stud having a nut portion and a threaded portion, the latter entering and cooperating with said central threaded bore, a fibre head carried by said end stud between the nut portion thereof and the annular flange of said inserted stud and engaged by said knurled edge, said head being recessed on its outer face, and a lock washer in said recess to engage the head and said nut portion, said nut portion overlying the knurled edge of said inserted stud.

8. In a spool, a metal barrel, an inserted stud in each end of the barrel and permanently secured thereto, said inserted studs each including an annular flange and a stud proper, the latter having a central threaded bore and the former having its edge knurled, the knurls being in clined to the axis of the stud, an end stud having a nut portion and a threaded portion, the latter entering and cooperating with said central threaded bore, a fibre head carried by said end stud between the nut portion thereof and the annular flange of said inserted stud and engaged by said knurled edge, said head being recessed on its outer face, and a lock washer in said recess to engage the head and said nut portion, said nut portion overlying the knurled edge of said inserted stud.

9. In a spool, a metal barrel, an inserted stud in each end of the barrel and permanently secured thereto and extending to the adjacent end of the barrel, said inserted studs each including an annular flange and a stud proper, the latter having a central threaded bore and the former having its edge knurled, an end stud having a nut portion and a threaded portion, the latter entering and cooperating with said central threaded bore, and a fibre head carried by said end stud between the nut portion thereof and the annular flange of said inserted stud, said inserted stud being pressed into the barrel and spot welded thereto.

10. In a spool, a metal barrel, fibre heads one at each end of the barrel, an inserted stud in each end of the barrel, said inserted studs each including an annular flange fitting the barrel and having its edge extending to the adjacent end of the barrel, said flange having its outer edge provided with teeth which lie inclined to the axis of the inserted stud and engage the adjacent fibre head, said inserted stud also including a stud proper and a web connecting the inner end of the stud proper to the inner end of said annular flange, the outer end of the stud proper also extending to the adjacent outer end of the barrel to engage the adjacent flbre head, said stud proper having a threaded bore, end studs each having a nut portion and a threaded portion, the latter entering and cooperating with said threaded bore, said fibre heads having their outer faces recessed, and lock washers on said studs proper to lie in said recesses and be engaged by the respective nut portion.

JOHN K. SCHWARTZ. FRED J. COLLINS. 

